<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.$store.state.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div
            class="button-wrapper"
            v-for="item of hot"
            :key="item.id"
            @click ="handleCityClick(item.name)"
          >
            <div class="button"   >{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area"
           v-for="(item,key) of cities"
           :key="key"
           :ref="key"
      >
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom"
               v-for="item of item"
               :key="item.id"
               @click ="handleCityClick(item.name)"
          >
            {{item.name}}
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
  import Bscroll from 'better-scroll'

  export default {
    name: "CityList",
    props: {
      hot: Array,
      cities: Object,
      letter: String,
    },
    methods: {
      handleCityClick:function(city) {
        this.$store.commit('changeCity',city)
        this.$router.push('/')
      }
    },
    watch: {
      letter: function () {
        if (this.letter) {
          const element = this.$refs[this.letter][0]
          this.scroll.scrollToElement(element)
        }
      }
    },
    mounted: function () {
      this.scroll = new Bscroll(this.$refs.wrapper)
    },
  }
</script>

<style lang="stylus" scoped>
  @import "~@/assets/styles/varibles.styl"
  .border-topbottom
    &:before
      border-color: #ccc
    &:after
      border-color: #ccc

  .border-bottom
    &:before
      border-color: #ccc

  .list
    overflow: hidden
    position: absolute
    top: 1.78rem
    left: 0
    right: 0
    bottom: 0

  .title
    line-height: .54rem
    background: #eee
    padding-left: .2rem
    color: #666
    font-size: .26rem

  .button-list
    overflow: hidden
    padding: .1rem .6rem .1rem .1rem
    .button-wrapper
      float: left
      width: 33.33%
      .button
        margin: .1rem
        padding: .1rem 0
        border-radius: .06rem
        border: .02rem solid #ccc
        text-align: center

  .item-list
    .item
      line-height: .76rem
      padding-left: .2rem
</style>
